Patents Assigned to CRRC QINGDAO SIFANG CO., LTD.
  • Patent number: 11931826
    Abstract: A continuous welding method and device for a hybrid welding, a welded finished product and a train body. The method comprises: performing hybrid welding on a groove of a welding piece by coupling a laser and a variable polarity arc; wherein the defocusing distance of the laser is not less than a Rayleigh length of the laser. According to the method of the present disclosure, the power density of the laser on the surface of the welding piece is effectively reduced and the height-width-ratio of the weld seam is decreased, the diameter of the welding melted pore is increased, the voids caused by the collapse of the small pore in the welding melted pore can be effectively reduced, thereby solving the problem that the weld porosity is difficult to escape in the prior art, and reducing the generation of the pores, effectively improving welding stability and reliability, and improving the mechanical properties of the weld seams.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: March 19, 2024
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Xiaohui Han, Zhendong Mao, Yuexin Gao, Kai Zheng, Gangqing Li
  • Patent number: 11916215
    Abstract: A power supply battery and a power supply system for high-speed maglev trains are disclosed. The power supply battery comprises: an electrolyte tank, a plurality of liquid flow pumps, and a plurality of aluminum-air battery reactors. The plurality of aluminum-air battery reactors are sequentially connected in series. The electrolyte tank comprises a plurality of elongate electrolyte grooves. One liquid flow pump corresponds to one aluminum-air battery reactor and one electrolyte groove.
    Type: Grant
    Filed: May 11, 2020
    Date of Patent: February 27, 2024
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Jianying Liang, Donghua Wu, Xing Chen, Guimei Deng, Jiankang Xue
  • Publication number: 20240061013
    Abstract: A method and device for testing a positioning and speed measuring system main unit. The method includes: obtaining a first simulation signal by simulating an absolute position sensor and a relative position sensor; sending the first simulation signal to a main unit of a to-be-tested positioning and speed measuring system; obtaining a first result calculated by the main unit based on the first simulation signal; obtaining a second result calculated based on the first simulation signal, the second result being a reference result corresponding to the first simulation signal; and determining that the main unit is abnormal if a comparison between the first result and the second result exceeds a first preset range. Therefore, the main unit can still be tested without components including absolute position sensors and relative position sensors, the test process is simple and easy to implement, a test environment can be built without large-scale investment.
    Type: Application
    Filed: January 5, 2022
    Publication date: February 22, 2024
    Applicant: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Fengchao WANG, Fujie JIANG, Xin MIAO, Jiyu HAN, Dongyu ZHAO
  • Patent number: 11859689
    Abstract: An active control anti-yaw damper (100) is provided. When a piston (2) of the active control anti-yaw damper (100) reciprocates inside a hydraulic cylinder (1), an interior of the hydraulic cylinder (1) is divided into two cylinder blocks (PA, PB) which communicate with an oil reservoir through two main oil lines respectively to form a primary loop between the hydraulic cylinder (1) and the oil reservoir; a reversing valve (PV3) is installed between the two main oil lines and the oil reservoir and is configured to change a flow direction of the primary loop when the active control anti-yaw damper (100) is in an active mode and adjust a displacement of the piston (2) within the hydraulic cylinder (1).
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: January 2, 2024
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Xu Wang, Haipeng Kong, Xiaoning Cao, Zhenxian Zhang, Haixiao Liang
  • Publication number: 20230382235
    Abstract: A voltage control method. A train traveling speed can be acquired; a target transformation ratio corresponding to the train traveling speed is determined according to correspondences between train traveling speeds and transformation ratios, the transformation ratio being a ratio of an input voltage to an output voltage; an input voltage is then transformed according to the target transformation ratio to obtain an output voltage, the output voltage being used for driving a train to travel. The correspondences between train traveling speeds and transformation ratios are obtained according to correspondences between train traveling speeds and train traction forces at different transformation ratios. By means of the method, the most suitable transformation ratio can be provided according to a traveling speed of a maglev train, thereby increasing the traction force of the maglev train and improving running efficiency.
    Type: Application
    Filed: May 24, 2021
    Publication date: November 30, 2023
    Applicant: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Donghua WU, Yanxiao LEI, Zhiqiang ZHANG, Yunfei WANG, Xinmai GAO
  • Patent number: 11827251
    Abstract: A bogie of a rail vehicle includes a frame, which includes two box-shaped longitudinal beam main bodies and a transverse beam main body; a wheelset, which includes an axle box, an axle and wheels mounted at two ends of the axle; a drive system, which at least includes a gearbox and a drive motor. Practice has proved that the two axle boxes arranged on the inner sides of the two longitudinal beam main bodies can reduce a volume by about 10%, and reduce a weight by about 10% to 15%, which can further reduce air resistance, and realize energy saving and emission reduction. The longitudinal beam main body is located on an inner side of a wheel, a span of the two the longitudinal beam main bodies is reduced, and the torsional rigidity of the frame is reduced, which is beneficial to improving a curve passing capacity.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: November 28, 2023
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Yonghua Feng, Mingxing Li, Hao Yin, Xin Yang, Junfeng Zhou
  • Patent number: 11807281
    Abstract: A cab roof structure, a cab and a rail train are described. The cab roof structure comprises: at least one roof connecting beam disposed on a roof carline; and at least two aluminum honeycomb panels, one roof connecting beam is disposed between every two aluminum honeycomb panels, and each aluminum honeycomb panel is fixedly connected to a left or right side of the roof connecting beam. The cab roof structure has the advantages of high structural strength, light weight, less welding and good manufacturability.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: November 7, 2023
    Assignee: CRRC Qingdao Sifang Co., Ltd.
    Inventors: Ye Zhang, Keming Shang, Honglei Tian, Xin Jiang, Xiao Dong
  • Patent number: 11780507
    Abstract: A composite material laying structure, a composite material vehicle body, and a composite material laying method, the composite material laying structure comprising a profile provided with multiple quadrilateral cavities reinforced by lap joints after butt joint connection, the quadrilateral cavities comprising square cavities and profile cavities, and the square shape of the square cavities transitioning along the profile into the trapezoidal shape of the profile cavities. The present composite material laying structure employs the laying structure of the composite material profile and a butt joint lap-joint form.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: October 10, 2023
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Sansan Ding, Peng Xiao, Yulong Gao, Hongwei Zhao, Peipei Wu
  • Patent number: 11738782
    Abstract: Disclosed are an activation control method and apparatus for a railway train. The method includes that: at least one activation request sent by at least one motorman controller of a railway train is received; a number of at least one motorman controller sending the at least one activation request is determined; when there are a plurality of motorman controllers sending the at least one activation request, the railway train is controlled to perform an emergency braking; and when there is one motorman controller sending the at least one activation request, it is determined that a target motorman controller has a permission to control the railway train, wherein the target motorman controller is a unique motorman controller sending the at least one activation request. The present disclosure solves the problem in the related art of potential safety hazard of a double-vehicle activation processing method.
    Type: Grant
    Filed: September 29, 2018
    Date of Patent: August 29, 2023
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Xingguo Li, Tai Liu, Huiqing Zhang
  • Patent number: 11718182
    Abstract: A railway vehicle with an aerodynamic lift control device is disclosed. An equipment compartment is formed between a vehicle body bottom plate at the bottom of a vehicle body and a passenger room floor, and the aerodynamic lift control device is provided in the equipment compartment; the aerodynamic lift control device comprises an aerodynamic lift regulation fan and aerodynamic lift air ducts, and an aerodynamic lift regulation air port located within the aerodynamic lift control range is formed in the vehicle body bottom plate; one end of each aerodynamic lift regulating air duct communicates with the aerodynamic lift regulation air port, and the other end communicates with the aerodynamic lift regulating fan; and the aerodynamic lift regulation fan changes the pressure distribution form of the bottom of the train by blowing positive pressure airflow or sucking negative pressure airflow.
    Type: Grant
    Filed: May 18, 2020
    Date of Patent: August 8, 2023
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Sansan Ding, Shuanbao Yao, Dawei Chen, Shaoqing Liu, Fujie Jiang
  • Publication number: 20230166777
    Abstract: The invention relates to a bogie for a rail vehicle characterized by a high lightweight construction potential. The bogie (1, 1*, 1**) according to the invention has, for primary suspension, a torsion spring system (12) in the inner volume of which a roll stabilizer having a torsion rod (11) is arranged in a torsionally movable manner. The roll stabilizer can be articulated to the car body of the rail vehicle or to the torsion spring system (12). The bogie (1, 1*, 1**) according to the invention advantageously has a particularly large installation space for built-in components.
    Type: Application
    Filed: March 29, 2021
    Publication date: June 1, 2023
    Applicants: CRRC QINGDAO SIFANG CO., LTD., CG RAIL - CHINESISCH-DEUTSCHES FORSCHUNGS- UND ENTWICKLUNGSZENTRUM FÜR BAHN
    Inventors: Andreas ULBRICHT, Werner HUFENBACH, Florian ZEIDLER, Sansan DING, Zhenxian ZHANG, Yulong GAO, Xiongfei ZHANG, Dawei RUAN, Chao SU, Kejian LIU, Xin CAO
  • Publication number: 20230132924
    Abstract: A bogie of a rail vehicle includes a frame, which includes two box-shaped longitudinal beam main bodies and a transverse beam main body; a wheelset, which includes an axle box, an axle and wheels mounted at two ends of the axle; a drive system, which at least includes a gearbox and a drive motor. Practice has proved that the two axle boxes arranged on the inner sides of the two longitudinal beam main bodies can reduce a volume by about 10%, and reduce a weight by about 10% to 15%, which can further reduce air resistance, and realize energy saving and emission reduction. The longitudinal beam main body is located on an inner side of a wheel, a span of the two the longitudinal beam main bodies is reduced, and the torsional rigidity of the frame is reduced, which is beneficial to improving a curve passing capacity.
    Type: Application
    Filed: April 7, 2021
    Publication date: May 4, 2023
    Applicant: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Yonghua FENG, Mingxing LI, Hao YIN, Xin YANG, Junfeng ZHOU
  • Patent number: 11609560
    Abstract: A method and system for monitoring a rail vehicle are provided. The method includes: a local device acquires current operating data and historical operating data of a rail vehicle from a controller of the rail vehicle, herein the local device, which is connected with the controller, is a portable testing device; the local device obtains fault information according to the current operating data and the historical operating data, herein the fault information includes at least one of a fault code and a fault description; the local device obtains a maintenance plan corresponding to the fault information, herein the maintenance plan is obtained through a remote device or a server side; and the local device maintains the rail vehicle according to the maintenance plan. The disclosure solves a technical problem in the traditional art that a troubleshooting process of a rail vehicle is difficult, and when the rail vehicle has a fault, the fault cannot be solved timely.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: March 21, 2023
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Junyan Wang, Tai Liu, Jie Yang, Chao Ma, Yanhong Shi
  • Publication number: 20230083245
    Abstract: An assembly-type car body and a rail vehicle. A roof, an underframe, side roofs and side walls of the assembly-type car body are separately formed by assembling double-layer pultruded profiles, and each double-layer pultruded profile comprises an outer plate, an inner plate and cavities formed by separating an interlayer between the outer plate and the inner plate using ribs; the upper edge and the lower edge of each side roof are respectively connected to an edge of the roof and the upper edge of a side wall by means of lapping joints, and the lower edge of each side wall is connected to an edge of the underframe by means of a side wall connector; each side wall connector is a double-layer pultruded profile unit, the upper edge of the side wall connector is connected to the lower edge of the side wall by a plug joint.
    Type: Application
    Filed: May 18, 2020
    Publication date: March 16, 2023
    Applicant: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Sansan DING, Peipei WU, Aiqin TIAN, Haiting LIANG, Hongwei ZHAO
  • Publication number: 20230061523
    Abstract: A composite material laying structure, a composite material vehicle body, and a composite material laying method, the composite material laying structure comprising a profile provided with multiple quadrilateral cavities reinforced by lap joints after butt joint connection, the quadrilateral cavities comprising square cavities and profile cavities, and the square shape of the square cavities transitioning along the profile into the trapezoidal shape of the profile cavities. The present composite material laying structure employs the laying structure of the composite material profile and a butt joint lap-joint form.
    Type: Application
    Filed: May 14, 2020
    Publication date: March 2, 2023
    Applicant: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Sansan DING, Peng XIAO, Yulong GAO, Hongwei ZHAO, Peipei WU
  • Patent number: 11577614
    Abstract: A suspension frame assembly of a magnetic levitation vehicle, includes multiple suspension frames which are sequentially connected; and each suspension frame includes two longitudinal beam bodies arranged in parallel. A supporting wheel and a holding arm are fixedly provided on both ends of each longitudinal beam body; and two anti-rolling devices mounted between mounting frames of two of the supporting wheels at a same end of the two longitudinal beam bodies; and the two longitudinal beam bodies of one of the suspension frames are respectively hingedly connected to the two longitudinal beam bodies of an adjacent suspension frame; an air-spring arm beam is provided at a hinged part of the two suspension frames, and is mounted on the holding arm of one of the two longitudinal beam bodies which are hingedly connected.
    Type: Grant
    Filed: May 3, 2018
    Date of Patent: February 14, 2023
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Xiankai Liu, Xiaojun Deng, Dalian Yu, Huijuan Li, Haixia Guo, Fujie Jiang, Zhaofu Li, Jin Luan, Hao Jin
  • Publication number: 20230031854
    Abstract: A railway vehicle with an aerodynamic lift control device is disclosed. An equipment compartment is formed between a vehicle body bottom plate at the bottom of a vehicle body and a passenger room floor, and the aerodynamic lift control device is provided in the equipment compartment the aerodynamic lift control device comprises an aerodynamic lift regulation fan and aerodynamic lift air ducts, and an aerodynamic lift regulation air port located within the aerodynamic lift control range is formed in the vehicle body bottom plate; one end of each aerodynamic lift regulating air duct communicates with the aerodynamic lift regulation air port, and the other end communicates with the aerodynamic lift regulating fan; and the aerodynamic lift regulation fan changes the pressure distribution form of the bottom of the train by blowing positive pressure airflow or sucking negative pressure airflow.
    Type: Application
    Filed: May 18, 2020
    Publication date: February 2, 2023
    Applicant: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Sansan DING, Shuanbao YAO, Dawei CHEN, Shaoqing LIU, Fujie JIANG
  • Patent number: 11554799
    Abstract: Provided is a method for controlling an anti-yaw damper, including: obtaining lateral acceleration signals of a frame and performing a first preprocessing on the lateral acceleration signals; obtaining a pressure difference between two chambers of an anti-yaw damper piston and performing a second preprocessing of the pressure difference; obtaining an MPPT algorithm objective function value at the current moment and an MPPT algorithm objective function value at the previous moment according to first preprocessing results and second preprocessing results, and comparing the MPPT algorithm objective function value at the current moment with the MPPT algorithm objective function value at the previous moment; and controlling the adjustment direction of an electromagnetic proportional valve of the anti-yaw damper according to the comparison result.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: January 17, 2023
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Haipeng Kong, Xu Wang, Hongyong Cao, Xiaoning Cao, Pingyu Zhou
  • Patent number: 11554675
    Abstract: A moving part of a maglev train, comprising two levitation frames that are arranged at an interval along the direction of travel, the two levitation frames being connected by means of a vertical beam; a peripheral wall of the vertical beam provided with a slot that may reduce the torsional rigidity thereof, being capable of reducing the torsional rigidity of the traditional vertical beam so as to reduce the coupling effect between the two levitation frames that are connected by means of the vertical beam, thereby greatly reducing the difficulty and energy consumption of levitation control. The levitation frames and the train body are provided therebetween with a vertical shock absorber and a horizontal absorber having suitable damping values, the levitation frames and the train body are provided therebetween with horizontal stoppers and vertical stoppers which may prevent excessive horizontal movement, rollover and overturning.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: January 17, 2023
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Sansan Ding, Fujie Jiang, Dalian Yu, Peng Liu, Xin Liang
  • Patent number: 11541920
    Abstract: A system and a method for monitoring pressure inside a railway vehicle comprise a carriage pressure detection device, a control device, and an alarm device. The control device is configured to receive and process a pressure signal collected by the carriage pressure detection device, perform calculation on and analyze the collected data, and transmit an alarm signal to the alarm device as an alarm when a preset alarm condition is met. When a pressure protection device fails, pressure changes inside the vehicle are monitored in real time by the carriage pressure detection device functioning independently of the pressure protection device.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: January 3, 2023
    Assignee: CRRC QINGDAO SIFANG CO., LTD.
    Inventors: Zongchang Wang, Xinxi Zhou, Lei Chen, Chenglong Chu, Shudian Li, Dan Guo, Lianhao Zhao